Wooden sled for single use
When you drive a sled yourself, you use this type of sled. The sled only had a brake and handle. It looked like a very simple structure and that's why I felt it looked difficult to steer.

All of the dogs preparing to pull sleds kept jumping up and pulling their leash. They looked like they were so excited to be able to run. I couldn't understand why they liked to pull a sled so much!

My husky team
I was sitting on a sled pulled by 6 husky dogs. The dogs were very keen to start running and they kept pulling my sled. The sled was tied to the tree, so they were just needlessly exhausting themselves....

As soon as a driver gave an order to my husky team to run, they started to run really fast. The dogs ran the uphill path very strongly and they kept following the pathway in the forest. Sometimes, the sled slid off the path and it almost rubbed against the trees. Driving a dog sled looked harder than I had thought.... The funny thing was that they sometimes put their face into the snow and ate it while running. I heard that sled dogs could also piss while running! Luckily(?), I didn't see them doing it.